Today I will give you a simple explanation about Read Permission since there are some users those asking about it. You might see a thread like this and couldn't open it because it have Read Permission [RP] with some numbers on it.

Basically there's a thread About MIUI Forum User Groups and Their Permissions but it's limited to general users only. Because of that, in this thread I will give you more detailed information about 17 Read Permission you might need to know.

General User

[Read Permission 1]

If you see this kind of RP, the thread can be accessed by guest, who got banned to post, and above.

[Read Permission 5]

This thread can be accessed by any users that still on verification process [need to confirm by email or phone number] and above.

[Read Permission 10]

You only can access this thread if you have Junior Member or Retired Administrator as a minimum user group [20 forum credits].

[Read Permission 20]

This mean the minimum user group to access the thread is Senior Member [users with minimum 25 forum credits].

[Read Permission 30]

You need to have minimum 200 forum credits or Gold Member user group to access the thread.

[Read Permission 50]

The thread that using this kind of RP needs minimum 500 forum credits or Diamond Member user group to access the thread.

[Read Permission 70]

If you see the thread with RP 70, you need to have Platinum Member as a user group with minimum 2000 forum credits.

[Read Permission 80]

For this thread with this RP, you need to become an Elite Member with minimum 5000 forum credits.

[Read Permission 87]

This is the highest possible thread that general user can access, but you need to achieve 20000 forum credits to access this kind of thread.

Special Team Member*

Aside general users, there are many kind of special team in this forum. They can set the RP for any thread they made for some specific reasons. But the highest RP they can give to their own thread is limited to their position.

[Read Permission 88]

Any thread with this RP is devoted for any member of MIUI Brazil Beta Program and MIUI India Language Tester.

Please note that if you see any threads in any sub-forum under RP 120 or 155, the possibilities are the thread is under development [last step editing, or will be published in specific time], or if it's a ROM thread, it might be the ROM is suspended or not yet released, or if it's another thread, it might be in review for some various reasons.